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CERN Document Server Pronađeno je 441 zapisa  1 - 10slijedećikraj  idi na zapis: Pretraživanje je potrajalo 0.72 sekundi 
1.
Measurement of $\Xi^{+}_{c}$ production in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV at LHCb / LHCb Collaboration
A study of prompt $\Xi_{c}^{+}$ production in proton-lead collisions is performed with the LHCb experiment at a centre-of-mass energy per nucleon pair of 8.16 TeV in 2016 in $p$Pb and Pb$p$ collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb$^{-1}$, respectively. The $\Xi_{c}^{+}$ production cross-section, as well as the $\Xi_{c}^{+}$ to $\Lambda_{c}^{+}$ production cross-section ratio, are measured as a function of the transverse momentum and rapidity and compared to latest theory predictions. [...]
arXiv:2305.06711; LHCb-PAPER-2022-041; CERN-EP-2023-057.- Geneva : CERN, 2024-04-01 - 20 p. - Published in : Phys. Rev. C 109 (2024) 044901 Fulltext: 2305.06711 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
Detaljnije
2.
Test of lepton flavour universality using $B^0 \to D^{*-}\tau^+\nu_{\tau}$ decays with hadronic $\tau$ channels / LHCb Collaboration
The branching fraction $\mathcal{B}(B^0 \to D^{*-}\tau^+\nu_\tau)$ is measured relative to that of the normalisation mode $B^0 \to D^{*-}\pi^+\pi^-\pi^+$ using hadronic $\tau^+ \to \pi^+\pi^-\pi^+(\pi^0)\bar{\nu}_\tau$ decays in proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb$^{-1}$. The measured ratio is $\mathcal{B}(B^0 \to D^{*-}\tau^+\nu_\tau)/\mathcal{B}(B^0 \to D^{*-}\pi^+\pi^-\pi^+)= 1.79 \pm 0.11 \pm 0.11$, where the first uncertainty is statistical and the second is related to systematic effects. [...]
arXiv:2305.01463; LHCb-PAPER-2022-052; CERN-EP-2023-062.- Geneva : CERN, 2023-07-01 - 18 p. - Published in : Phys. Rev. D Fulltext: LHCb-PAPER-2022-052 - PDF; 2305.01463 - PDF; Publication - PDF; Related data file(s): ZIP;
Detaljnije
3.
Study of charmonium decays to $K^0_S K \pi$ in the $B \to (K^0_S K \pi) K$ channels / LHCb Collaboration
A study of the $B^+\to K^0_SK^+K^-\pi^+$ and $B^+\to K^0_SK^+K^+\pi^-$ decays is performed using proton-proton collisions at center-of-mass energies of 7, 8 and 13 TeV at the LHCb experiment. The $K^0_SK \pi$ invariant mass spectra from both decay modes reveal a rich content of charmonium resonances. [...]
arXiv:2304.14891; LHCb-PAPER-2022-051; CERN-EP-2023-060.- Geneva : CERN, 2023-08-01 - 60 p. - Published in : Phys. Rev. D 108 (2023) 032010 Fulltext: LHCb-PAPER-2022-051 - PDF; 2304.14891 - PDF; Publication - PDF; Related data file(s): ZIP;
Detaljnije
4.
Precision Measurement of <math display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math> Violation in the Penguin-Mediated Decay <math display="inline"><mrow><msubsup><mrow><mi>B</mi></mrow><mrow><mi>s</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo stretchy="false">→</mo><mi>ϕ</mi><mi>ϕ</mi></mrow></math> / LHCb Collaboration
A flavor-tagged time-dependent angular analysis of the decay $B_s^{0} \rightarrow \phi\phi$ is performed using $pp$ collision data collected by the LHCb experiment at the center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6fb$^{-1}$. The CP-violating phase and direct CP-violation parameter are measured to be $\phi_s^{s\bar{s}s} = -0.042 \pm 0.075 \pm 0.009 $ rad and $|\lambda|=1.004\pm 0.030 \pm 0.009 $, respectively, assuming the same values for all polarization states of the $\phi\phi$ system. [...]
arXiv:2304.06198; LHCb-PAPER-2023-001; CERN-EP-2023-042.- Geneva : CERN, 2023-10-23 - 12 p. - Published in : Phys. Rev. Lett. 131 (2023) 171802 Fulltext: LHCb-PAPER-2023-001 - PDF; 2304.06198 - PDF; Publication - PDF; Related data file(s): ZIP;
Detaljnije
5.
Search for $D^{*}(2007)^0\to\mu^+\mu^-$ in $B^-\to\pi^-\mu^+\mu^-$ decays / LHCb Collaboration
The very rare $D^{*}(2007)^0\to\mu^+\mu^-$ decay is searched for by analysing $B^-\to\pi^-\mu^+\mu^-$ decays. The analysis uses a sample of beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2304.01981; LHCb-PAPER-2023-004; CERN-EP-2023-050.- Geneva : CERN, 2023-07-26 - 23 p. - Published in : Eur. Phys. J. C 83 (2023) 666 Fulltext: 2304.01981 - PDF; document - PDF; Related data file(s): ZIP;
Detaljnije
6.
Observation of the $B^0_s\rightarrow \chi_{c1}(3872)\pi^+\pi^-$ decay / LHCb Collaboration
The first observation of the $B^0_s \rightarrow \left( \chi_{c1}(3872) \rightarrow J/\psi\pi^+\pi^-\right) \pi^+ \pi^-$ decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6fb$^{-1}$, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, respectively. The ratio of branching fractions relative to the $B^0_s \rightarrow \left( \psi(2S) \rightarrow J\psi\pi^+\pi^- \right) \pi^+ \pi^-$ decay is measured to be $$ \frac{ \mathcal{B} \left( B^0_s \rightarrow \chi_{c1}(3872) \pi^+\pi^-\right) \times \mathcal{B} \left( \chi_{c1}(3872) \rightarrow J\psi\pi^+\pi^-\right)} { \mathcal{B} \left( B^0_s \rightarrow \psi(2S) \pi^+ \pi^- \right) \times \mathcal{B} \left( \psi(2S) \rightarrow J\psi\pi^+\pi^-\right) } = \left( 6.8 \pm 1.1 \pm 0.2 \right) \times 10^{-2} , $$ where the first uncertainty is statistical and the second systematic. [...]
arXiv:2302.10629; CERN-EP-2023-015; LHCb-PAPER-2022-049; LHcb-PAPER-2022-049.- Geneva : CERN, 2023-07-11 - 18 p. - Published in : JHEP 2307 (2023) 084 Fulltext: LHCb-PAPER-2022-049 - PDF; 2302.10629 - PDF; document - PDF; Related data file(s): ZIP;
Detaljnije
7.
A study of $C\!P$ violation in the decays $B^\pm\to[K^+K^-\pi^+\pi^-]_D h^{\pm}$ ($h = K, \pi$) and $B^\pm\to[\pi^+\pi^-\pi^+\pi^-]_D h^{\pm}$ / LHCb Collaboration
The first study of $C\!P$ violation in the decay mode $B^\pm\to[K^+K^-\pi^+\pi^-]_D h^{\pm}$, with $h=K,\pi$, is presented, exploiting a data sample of proton-proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of $9$ fb$^{-1}$. The analysis is performed in bins of phase space, which are optimised for sensitivity to local $C\!P$ asymmetries. [...]
arXiv:2301.10328; LHCb-PAPER-2022-037; CERN-EP-2022-285.- Geneva : CERN, 2023-06-29 - 28 p. - Published in : Eur. Phys. J. C
Fulltext: LHCb-PAPER-2022-037 - PDF; 2301.10328 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
Detaljnije
8.
First observation of the $B^+ \rightarrow D_s^+ D_s^- K^+$ decay / LHCb Collaboration
The $B^+ \rightarrow D_s^+ D_s^- K^+$ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at centre-of-mass energies of $7$, $8$ and $13\, \text{TeV}$, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. Its branching fraction relative to that of the $B^{+} \rightarrow D^{+} D^{-} K^{+}$ decay is measured to be $$\frac{\mathcal{B}\left(B^{+} \rightarrow D_s^{+} D_s^{-} K^{+}\right)}{\mathcal{B}\left(B^{+} \rightarrow D^{+} D^{-} K^{+}\right)}=0.525 \pm 0.033 \pm 0.027 \pm 0.034,$$ where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the $D_s^{\pm} \rightarrow K^{\mp} K^{\pm} \pi^{\pm}$ and $D^{\pm} \rightarrow K^{\mp} \pi^{\pm} \pi^{\pm}$ decays. [...]
arXiv:2211.05034; LHCb-PAPER-2022-019; CERN-EP-2022-205.- Geneva : CERN, 2023-08-01 - 14 p. - Published in : Phys. Rev. Lett. 108 (2023) 034012 Fulltext: 2211.05034 - PDF; Publication - PDF; Related data file(s): ZIP;
Detaljnije
9.
Observation of a resonant structure near the $D_s^+ D_s^-$ threshold in the $B^+\to D_s^+ D_s^- K^+$ decay / LHCb Collaboration
An amplitude analysis of the $B^+\to D_s^+ D_s^- K^+$ decay is carried out to study for the first time its intermediate resonant contributions, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. A near-threshold peaking structure, referred to as $X(3960)$, is observed in the $D_s^+ D_s^-$ invariant-mass spectrum with significance greater than 12 standard deviations. [...]
arXiv:2210.15153; CERN-EP-2022-200; LHCb-PAPER-2022-018.- Geneva : CERN, 2023-08-14 - 12 p. - Published in : Phys. Rev. Lett. 131 (2023) 071901 Fulltext: LHCb-PAPER-2022-018 - PDF; 2210.15153 - PDF; Publication - PDF; Related data file(s): ZIP;
Detaljnije
10.
Measurement of CP asymmetries in $ {D}_{(s)}^{+}\to \eta {\pi}^{+} $ and $ {D}_{(s)}^{+}\to {\eta}^{\prime }{\pi}^{+} $ decays / LHCb Collaboration
Searches for $CP$ violation in the decays $D^+_{(s)}\rightarrow \eta \pi^+$ and $D^+_{(s)}\rightarrow \eta^{\prime} \pi^+$ are performed using $pp$ collision data corresponding to 6 fb$^{-1}$ of integrated luminosity collected by the LHCb experiment. The calibration channels $D^+_{(s)}\rightarrow \phi \pi^+$ are used to remove production and detection asymmetries. [...]
arXiv:2204.12228; CERN-EP-2022-035; LHCb-PAPER-2021-051.- 2023-04-18 - 16 p. - Published in : JHEP 04 (2023) 081 Fulltext: LHCb-PAPER-2021-051_arxiv - PDF; 2204.12228 - PDF; document - PDF; Related data file(s): ZIP;
Detaljnije

CERN Document Server : Pronađeno je 441 zapisa   1 - 10slijedećikraj  idi na zapis:
Također vidi: slična imena autora
35 Maratas, J
38 Maratas, J.
5 Maratas, J.M.
14 Maratas, Jan Mickelle
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